CN103791018B - A kind of multidimensional vibration-isolating platform and pneumatic spring thereof - Google Patents
A kind of multidimensional vibration-isolating platform and pneumatic spring thereof Download PDFInfo
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- CN103791018B CN103791018B CN201410044109.5A CN201410044109A CN103791018B CN 103791018 B CN103791018 B CN 103791018B CN 201410044109 A CN201410044109 A CN 201410044109A CN 103791018 B CN103791018 B CN 103791018B
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- 239000003921 oil Substances 0.000 claims description 50
- 230000004888 barrier function Effects 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 11
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- 238000002955 isolation Methods 0.000 abstract description 26
- 238000013016 damping Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 description 9
- 230000003068 static effect Effects 0.000 description 8
- 210000004907 gland Anatomy 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a kind of multidimensional vibration-isolating platform, be provided with multiple pneumatic spring and multiple damper; The lower end of pneumatic spring and damper is all articulated and connected by hinge and bedframe lower plate; Pneumatic spring is all connected with load-carrying dish by spherical linkage with the upper end of damper; Load-carrying dish is also respectively by the hydraulic cylinder piston rod hinge links of connecting rod and multiple oil hydraulic cylinder; Cylinder body and the bedframe upper plate of oil hydraulic cylinder are articulated and connected.The present invention also discloses the pneumatic spring in this vibration-isolating platform.Adopt technique scheme, fluid-pressurized pressure element is in parallel as positive stiffness elements with pneumatic spring as negative stiffness element, the non-linear rigidity of this vibration-isolating platform near the accurate zero stiffness and equilibrium position of its equilibrium position can be realized, difficult problem when conventional linear vibrating isolation system isolation low frequency or superlow frequency vibrating can be solved; Rigidity, damping all can easyly regulate, and are applicable to wide frequency domain vibration isolation, have good engineering adaptability.
Description
Technical field
The invention belongs to mechanical technical field, relate to the damping in mechanical engineering, vibration isolation technique.More particularly, the present invention relates to a kind of multidimensional vibration-isolating platform.In addition, the invention still further relates to the pneumatic spring that rigidity in this vibration-isolating platform is adjustable.
Background technique
In order to overcome the contradiction between system stiffness and static displacement, vibrating isolation system should have higher static stiffness and lower dynamic rate simultaneously.Higher static stiffness ensures that system bearing ability is comparatively large, and static displacement is less; Lower dynamic rate ensures that system frequency is lower, and low frequency vibration isolation effect is better.
Traditional passive vibration isolation system is greater than vibrating isolation system inherently frequency in extraneous energizing frequency
times time, just can play vibration isolation effect.This vibrating isolation system can be isolated energizing frequency preferably and is greater than
the medium, high frequency vibration of times system frequency, but isolation energizing frequency is less than
the ability of the low-frequency vibration of times system frequency especially superlow frequency vibrating is poor.
In order to improve the ability of passive vibration isolation isolation of system low frequency and superlow frequency vibrating, the natural frequency of vibrating isolation system should be reduced, usually having two kinds of ways:
One is the rigidity reducing vibrating isolation system; Two is increase counterweight.
But for vertical vibration isolation system, reduce rigidity and the static displacement of vibrating isolation system can be made to increase and stability decline; And to increase counterweight be obviously last selection, only just adopt when last resort, and application is limited.
Summary of the invention
The invention provides a kind of multidimensional vibration-isolating platform, its objective is and make multidimensional vibration-isolating platform have both higher static stiffness and lower dynamic rate and stiffness and damping is adjustable; Accurate zero stiffness characteristic can be realized, can the multidimensional vibration-isolating platform of wide frequency domain vibration isolation.
To achieve these goals, the technological scheme that the present invention takes is:
Multidimensional vibration-isolating platform of the present invention, comprise bedframe, load carrying platform, described bedframe comprises the bedframe upper plate and bedframe lower plate that be arranged in parallel, between described bedframe upper plate and bedframe lower plate, is fixedly connected with by multiple bedframe supporting post;
Described load carrying platform comprises the load-carrying dish parallel with bedframe upper plate, and described load-carrying dish is located in the manhole in the middle of bedframe upper plate; The profile of described load-carrying dish is less than this manhole;
Described load carrying platform is also provided with multiple pneumatic spring and multiple damper; Described pneumatic spring and the lower end of damper are all articulated and connected by hinge and bedframe lower plate; Described pneumatic spring is all connected with load-carrying dish by spherical linkage with the upper end of damper;
Described pneumatic spring and damper on load-carrying dish circumferentially shape alternately arrange;
Described load-carrying dish is also respectively by the hydraulic cylinder piston rod hinge links of connecting rod and multiple oil hydraulic cylinder; Hydraulic cylinder body and the bedframe upper plate of described oil hydraulic cylinder are articulated and connected;
Described oil hydraulic cylinder is uniformly distributed with the Central Symmetry of load-carrying dish.
Described oil hydraulic cylinder also comprises oil hydraulic cylinder hydraulic fluid port I, oil hydraulic cylinder hydraulic fluid port II, hydraulic cylinder piston rod connecting head;
Described hydraulic cylinder piston rod connecting head is provided with hydraulic cylinder piston rod connecting head pin-and-hole;
Described connecting rod is rotationally connected respectively by connecting pin bores on link connector pin I, link connector pin II and load-carrying dish and hydraulic cylinder piston rod connecting head pin-and-hole.
Described pneumatic spring comprises rubber pneumatic bag, air cylinder, stick, handle of transferring the files;
Described rubber pneumatic bag is arranged in the top of pneumatic spring;
Upper end and the air spring upper cover of described rubber pneumatic bag are sealedly and fixedly connected; The lower end of rubber pneumatic bag and the upper end of air cylinder are sealedly and fixedly connected; Lower end and the pneumatic spring seat lower cover of described air cylinder are sealedly and fixedly connected, and pneumatic spring seat lower cover is fixedly connected with spring seat base;
Be furnished with stick in the side of described spring seat base, described stick is fixedly connected with handle of transferring the files.
Three gas barriers are had in the internal placement of described air cylinder; Three described gas barriers are equally spaced from top to bottom in air cylinder;
The center of each gas barrier is equipped with the gas barrier vent of trough of belt, and its fluting presses the pivotal angle of gas barrier vent axis, is 180 ° of direction grooves, 120 ° of direction grooves respectively; 60 ° of direction grooves;
Also breathing pipe is provided with in described gas barrier vent; Described breathing pipe is provided with the air vent tube openings that circumferential arc length differs in the position crossed with three gas barriers, opening radian is respectively 180 °, 120 °, 60 ° from top to bottom.
The lower end of described breathing pipe is fixedly connected with the vertical bevel gear of cylinder bevel gear pair through bearing; The substantially horizontal bevel gear of described cylinder bevel gear pair is fixedly connected with stick.
Described stick is fixedly connected with handle of transferring the files.
Described rubber pneumatic bag is provided with a rubber pneumatic bag girdle ring.
Described damper comprises damper rod, damper clutch release slave cylinder, base of damper, damper piston;
The upper end of described damper rod is fixedly connected with damper ball pivot seat, and lower end is fixedly connected with damper piston;
Described damper piston is positioned at damper clutch release slave cylinder; The upper end of described damper clutch release slave cylinder is provided with piston rod guide sleeve and rod seal circle;
The inside of described damper clutch release slave cylinder is also provided with guiding tube, and described guiding tube is through described damper piston;
Described damper piston is furnished with stuffing box bearing, passes for guiding tube, and ensure that guiding tube can rotate activity, the cylindrical of stuffing box bearing is enclosed with seal ring;
Described guiding tube is positioned on the bottom cylindrical of described damper clutch release slave cylinder, and cover has stuffing box gland, and the cylindrical surface cover of described stuffing box gland has flow control valve;
Be furnished with gear shifting mechanism in described base of damper, described gear shifting mechanism comprises damper and to transfer the files the cone gear of handle, damper stick, bevel gear pair;
Two cone gears of bevel gear pair are fixedly connected with the front end of damper stick with the lower end of guiding tube respectively; Rear end and the damper of damper stick handle of transferring the files is fixedly connected with.
Described stuffing box gland, guiding tube guide sleeve and guiding tube are provided with the rectangular opening of one group of corresponding control flow, and the rectangular opening on namely described guiding tube guide sleeve is guide sleeve rectangular opening, and the rectangular opening on guiding tube is guiding tube liquid current control rectangular opening;
The pore size of described rectangular opening is different;
When described damper works, there are six gears adjustable; When gear is at I shelves, rectangular opening conducting minimum on guiding tube, under making damper upper cylinder half and damper, cylinder conducting cross section is minimum, and now damping is maximum, all the other gears the like.
Described multidimensional vibration-isolating platform comprises the hydraulic system driving hydraulic cylinder works; Described hydraulic system comprises oil hydraulic pump, pressure regulator valve, solenoid valve, hydraulic coupling index gauge, oil pipe, solenoid valve, hydraulic oil container;
Described oil pipe connecting fluid press pump, and be communicated with the oil pocket of oil hydraulic cylinder by solenoid valve; The return line of this hydraulic system is connected with described hydraulic oil container;
Described oil hydraulic pump is unidirectional volume adjustable hydraulic pump;
Described pressure regulator valve is the relief valve of pressure adjustable;
Described solenoid valve is the three position four-way directional control valve with bit function in H type;
Described hydraulic coupling index gauge is hydralic pressure gauge.
Described multidimensional vibration-isolating platform comprises to the pressure system of pneumatic spring inflation; Described pressure system comprises air compressor, air pressure index gauge, tracheae;
Air compressor is communicated with the air cavity of pneumatic spring by described tracheae;
Described air pressure index gauge is connected on described tracheae.
The present invention adopts technique scheme, and compared with prior art its advantage is:
1, in certain deformation band, fluid-pressurized pressure element is in parallel as positive stiffness elements with pneumatic spring as negative stiffness element, the non-linear rigidity of this vibration-isolating platform near the accurate zero stiffness and equilibrium position of its equilibrium position can be realized, difficult problem when conventional linear vibrating isolation system isolation low frequency or superlow frequency vibrating can be solved;
2, rigidity, damping all can easyly regulate, and are applicable to wide frequency domain vibration isolation, have good engineering adaptability;
3, while having higher support stiffness, also have very low motion rigidity, static deformation amount is little, and dynamic natural frequency is low, and vibration isolating effect is good;
4, by the free adjusting of rigidity, damping, the intrinsic contradictions restricting traditional vibrating isolation system can be solved, i.e. the contradiction of low-frequency vibration transmissibility and dither decrement;
5, by the adjustment of pneumatic spring substructure height, height and the equipoise of whole platform can be changed, the vibration isolation object of Different Weight can be adapted to.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the mark in figure are briefly described:
Fig. 1 is the three-dimensional structure diagram of the adjustable multidimensional vibration-isolating platform of stiffness and damping of the present invention;
Fig. 2 is the bedframe plan view in structure shown in Fig. 1;
Fig. 3 is the bedframe front view in structure shown in Fig. 1;
Fig. 4 is the A-A direction sectional view in Fig. 3;
Fig. 5 is bedframe in the present invention and load carrying platform linkage structure sectional view;
Fig. 6 is the assembling relationship figure of bearing platform and bedframe upper part connecting mechanism;
Fig. 7 is pneumatic spring front view;
Fig. 8 is the overall sectional view of pneumatic spring;
Fig. 9 is the enlarged top view of structure in Fig. 8;
Figure 10 is the bottom enlarged view of structure in Fig. 8;
Figure 11 is the gear shifting mechanism front view of pneumatic spring;
Figure 12 is the handle front view of transferring the files of pneumatic spring;
Figure 13 is the gas barrier structural drawing in pneumatic spring;
Figure 14 is the breather pipe structure figure of pneumatic spring;
Figure 15 is air cylinder cut-away view;
Figure 16 is the pneumatic spring inflation schematic diagram of the adjustable multidimensional vibration-isolating platform of stiffness and damping of the present invention;
Figure 17 is the second gear operating diagram of pneumatic spring;
Figure 18 is the third gear operating diagram of pneumatic spring;
Figure 19 is the fourth gear operating diagram of pneumatic spring;
Figure 20 is the front view of damper;
Figure 21 is the overall sectional view of damper;
The enlarged top view of structure in Figure 22 Figure 20;
The bottom enlarged view of structure in Figure 23 Figure 20;
Figure 24 is that damper is transferred the files part operating mechanism structural drawing;
Figure 25 is damper conducting tube wall side unfolded drawing;
Figure 26 is damper adjusting mechanism internal structure diagram;
Figure 27 is the gear shifting mechanism front view of damper pneumatic spring;
Figure 28 is hydraulic system principle figure of the present invention.
Be labeled as in figure:
A, bedframe; B, load carrying platform; C, pneumatic spring; D, damper;
A-1, bedframe upper plate; A-2, hinge base; A-3, hydraulic cylinder piston rod; A-4, oil hydraulic cylinder; A-5, oil hydraulic cylinder install groove; A-6, manhole; A-7, bedframe lower plate; A-8, bedframe supporting post;
B-1, load-carrying dish; B-2, spherical hinge hinge head; B-3, connecting rod; B-4, oil hydraulic cylinder hydraulic fluid port I; B-5, hydraulic cylinder body; B-6, oil hydraulic cylinder hydraulic fluid port II; B-7, link connector pin I; Connecting pin bores on B-8, load-carrying dish; B-9, link connector pin II; B-10, hydraulic cylinder piston rod connecting head pin-and-hole; B-11, hydraulic cylinder piston rod connecting head;
C-1, spherical hinge seat; C-2, fastening screw trip bolt; C-3, air spring upper cover; C-4, rubber pneumatic bag; C-5, rubber pneumatic bag girdle ring; C-6, air cylinder; C-7, pneumatic spring seat lower cover; C-8, spring seat base; C-9, connecting rod; C-10, hinge head; C-11, stick; C-12, handle of transferring the files; C-13, gas barrier; C-14, breathing pipe; C-15,180 ° of direction grooves; C-16,120 degree of direction grooves; C-17,60 ° of direction grooves; C-18, the first gas cabin; C-19, the second gas cabin; C-20, the 3rd gas cabin; C-21, the 4th gas cabin; C-22, bearing; C-23, cylinder bevel gear pair; C-24, little spring; C-25, positioning ball; C-26, ball recess; C-27, gas barrier vent; C-28, pneumatic spring air-filled pore; C-29, air vent tube openings;
D-1, damper ball pivot seat; D-2, damper rod; D-3, damper clutch release slave cylinder; D-4, damper bottom; D-5, fastening screw trip bolt; D-6, base of damper; D-7, damper hinge head; D-8, damper are transferred the files handle; D-9, damper stick; D-10, piston rod guide sleeve; D-11, guiding tube; D-12, stuffing box bearing; D-13, seal ring; D-14, rod seal circle; D-15, damper piston; D-16, damper upper cylinder half; Cylinder under D-17, damper; D-18, ball pivot seat spherical groove; D-19, stuffing box gland; D-20, guiding tube guide sleeve; D-21, positioning metal bead; D-22, location little spring; D-23, cone gear; D-24, guiding tube liquid current control rectangular opening; D-25, ball recess; D-26, guide sleeve rectangular opening;
E-1, oil hydraulic pump; E-2, pressure regulator valve; E-3, hydraulic coupling index gauge; E-4, oil pipe; E-5, solenoid valve; E-6, hydraulic oil container;
F-1, air compressor; F-2, air pressure index gauge; F-3, tracheae.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technological scheme.
Structure of the present invention as shown in Figures 1 to 5, for the multidimensional vibration-isolating platform that a kind of stiffness and damping is adjustable, comprise bedframe A, load carrying platform B, described bedframe A comprises the bedframe upper plate A-1 and bedframe lower plate A-7 that be arranged in parallel, between described bedframe upper plate A-1 and bedframe lower plate A-7, be fixedly connected with by multiple bedframe supporting post A-8.
Represent in Fig. 1 and Fig. 4, described bedframe A comprises eight bedframe supporting post A-8; Bedframe upper plate A-1 and bedframe lower plate A-7 is rigidly connected by eight bedframe supporting post A-8.
In order to solve prior art Problems existing and overcome its defect, realize making multidimensional vibration-isolating platform have both higher static stiffness and lower dynamic rate and the adjustable goal of the invention of stiffness and damping, the technological scheme that the present invention takes is:
As shown in Figures 1 to 5, multidimensional vibration-isolating platform of the present invention, wherein, described load carrying platform B comprises the load-carrying dish B-1 parallel with bedframe upper plate A-1, and described load-carrying dish B-1 is located in the manhole A-6 in the middle of bedframe upper plate A-1; The profile of described load-carrying dish B-1 is less than this manhole A-6;
Described load carrying platform B is also provided with multiple pneumatic spring C and multiple damper D;
As shown in figs. 1 and 4, load carrying platform B comprises three pneumatic spring C, three damper D.
Represent in figure, the lower end of three pneumatic spring C and three damper D is all articulated and connected by hinge and bedframe lower plate A-7; Described pneumatic spring C is all connected with load-carrying dish B-1 by spherical linkage with the upper end of damper D;
Described pneumatic spring C and damper D on load-carrying dish B-1 circumferentially shape alternately arrange.
Represent in Fig. 1 to Fig. 4, described load-carrying dish B-1 is also respectively by the hydraulic cylinder piston rod A-3 hinge links of four connecting rod B-3 and four oil hydraulic cylinder A-4; Hydraulic cylinder body B-5 and the bedframe upper plate A-1 of described oil hydraulic cylinder A-4 are articulated and connected.
Described oil hydraulic cylinder A-4 is uniformly distributed with the Central Symmetry of load-carrying dish B-1.
Load-carrying dish B-1 also by four connecting rod B-3 be arranged in the hydraulic cylinder piston rod A-3 hinge links that oil hydraulic cylinder in bedframe upper plate A-1 installs four oil hydraulic cylinder A-4 in groove A-5.Four oil hydraulic cylinder A-4 are that left-right and front-back cross is to distribution.
Its setting type as shown in Figures 1 to 4.The manhole A-6 of bedframe upper plate A-1 is the space for load-carrying dish B-1 is arranged.
Bedframe in the present invention and load carrying platform linkage structure be as shown in Figure 5 and Figure 6:
Described oil hydraulic cylinder A-4 also comprises oil hydraulic cylinder hydraulic fluid port IB-4, oil hydraulic cylinder hydraulic fluid port IIB-6, hydraulic cylinder piston rod connecting head B-11;
Described hydraulic cylinder piston rod connecting head B-11 is provided with hydraulic cylinder piston rod connecting head pin-and-hole B-10;
Described connecting rod B-3 is rotationally connected respectively by connecting pin bores B-8 on link connector pin IB-7, link connector pin IIB-9 and load-carrying dish and hydraulic cylinder piston rod connecting head pin-and-hole B-10.
The structure of pneumatic spring C of the present invention, as shown in Fig. 7 to Figure 10 and Figure 12:
Described pneumatic spring C comprises rubber pneumatic bag C-4, air cylinder C-6, stick C-11, transfer the files handle C-12;
Described rubber pneumatic bag C-4 is arranged in the top of pneumatic spring C;
Upper end and the air spring upper cover C-3 of described rubber pneumatic bag C-4 are sealedly and fixedly connected; The lower end of rubber pneumatic bag C-4 and the upper end of air cylinder C-6 are sealedly and fixedly connected; Lower end and the pneumatic spring seat lower cover C-7 of described air cylinder C-6 are sealedly and fixedly connected, and pneumatic spring seat lower cover C-7 is fixedly connected with spring seat base C-8.
The upper end of spring seat base C-8 and connecting rod C-9 is connected, and the lower end of connecting rod C-9 is provided with hinge head C-10, the hinge base A-2 chain connection that hinge head C-10 is corresponding with on bedframe lower plate A-7.
As shown in Fig. 7, Fig. 8, Figure 10 and Figure 11:
Be furnished with stick C-11 in the side of described spring seat base C-8, described stick C-11 is fixedly connected with the handle C-12 that transfers the files.
Air spring upper cover C-3 is fastenedly connected by fastening screw trip bolt C-2 and spherical hinge seat C-1; The spherical hinge hinge head B-2 that spherical hinge seat C-1 is corresponding with on bedframe upper plate A-1 connects.
As shown in Figure 8 and Figure 9:
Three gas barrier C-13 are had in the internal placement of described air cylinder C-6; Three described gas barrier C-13 are equally spaced from top to bottom in air cylinder C-6.
As shown in Figure 13, Figure 15, Figure 17, Figure 18 and Figure 19:
The center of each gas barrier C-13 is equipped with the gas barrier vent C-27 of trough of belt, but fluting angle is inconsistent in other words in direction, its fluting presses the pivotal angle of gas barrier vent axis, is 180 ° of direction groove C-15,120 ° of direction groove C-16 respectively; 60 ° of direction groove C-17;
As shown in Fig. 8, Fig. 9, Figure 14 and Figure 15:
Breathing pipe C-14 is also provided with in described gas barrier vent C-27; Described breathing pipe C-14 is provided with the air vent tube openings C-29 that circumferential arc length differs in the position crossed with three gas barrier C-13, opening radian is respectively 180 °, 120 °, 60 ° from top to bottom.
As shown in figs:
The lower end of described breathing pipe C-14 is fixedly connected with the vertical bevel gear of cylinder bevel gear pair C-23 through bearing C-22; The substantially horizontal bevel gear of described cylinder bevel gear pair C-23 is fixedly connected with stick C-11;
Stick C-11 is fixedly connected with the handle C-12 that transfers the files.
The part that stick C-11 is arranged in spring seat base C-8 is transferred the files rotary positioning apparatus, and this device comprises little spring C-24, positioning ball C-25, and stick C-11 is provided with the ball recess C-26 of placement positioning steel ball C-25.The upper end of air cylinder C-6 is also provided with pneumatic spring air-filled pore C-28, inflates for rubber bag tank C-4 and air cylinder C-6.
As shown in Figure 7 to 9:
Described rubber pneumatic bag C-4 is provided with a rubber pneumatic bag girdle ring C-5.
The working principle of pneumatic spring C:
Before work, inflate first to pneumatic spring C, inflation principle as shown in figure 16.Air compressor F-1 operates, and is inflated to pneumatic spring C by tracheae F-3, and air pressure index gauge F-2 is in order to show the pressure of pipeline inflation.
After load-carrying dish B-1 reaches the height of needs, close gas check valve, air compressor F-1 quits work.In working procedure, the actual excitation situation that can be subject to according to platform, is changed the volume of the air participating in change, and then changes the rigidity of pneumatic spring C by the handle C-12 that transfers the files.
The mode of the embody rule of pneumatic spring C is:
When the handle C-12 that transfers the files pushes I shelves, the volume of air participating in change be both internal volume and the first gas cabin C-18 of rubber pneumatic bag C-4 with;
When the handle C-12 that transfers the files pushes II shelves, the volume of air participating in change be the internal volume of rubber pneumatic bag C-4 and the first gas cabin C-18, the second gas cabin C-19 three's and;
When the handle C-12 that transfers the files pushes III shelves, the volume of air participating in change be the internal volume of rubber pneumatic bag C-4 and the first gas cabin C-18, the second gas cabin C-19, the 3rd gas cabin C-20's and;
When the handle C-12 that transfers the files pushes IV shelves, the volume of air participating in change be the internal volume of rubber pneumatic bag C-4 and the first gas cabin C-18, the second gas cabin C-19, the 3rd gas cabin C-20, the 4th gas cabin C-21's and;
The volume of air participating in change is larger, and the rigidity of pneumatic spring C is lower.
The structure of the damper D in the present invention, as shown in Figure 20 to Figure 24, Figure 26, Figure 27:
Described damper D comprises damper rod D-2, damper clutch release slave cylinder D-3, base of damper D-6, damper piston D-15.
As shown in Figure 21 to Figure 22:
The upper end of described damper rod D-2 is fixedly connected with damper ball pivot seat D-1, and lower end is fixedly connected with damper piston D-15;
Damper ball pivot seat D-1 is connected by the spherical hinge hinge head B-2 that ball pivot seat spherical groove D-18 is corresponding with on bedframe upper plate A-1;
Described damper piston D-15 is positioned at damper clutch release slave cylinder D-3; The upper end of described damper clutch release slave cylinder D-3 is provided with piston rod guide sleeve D-10 and rod seal circle D-14;
The inside of described damper clutch release slave cylinder D-3 is also provided with guiding tube D-11, and described guiding tube D-11 is through described damper piston D-15;
Described damper piston D-15 is furnished with stuffing box bearing D-12, passes for guiding tube D-11, and ensure that guiding tube D-11 can rotate activity, the cylindrical of stuffing box bearing D-12 is enclosed with seal ring D-13.
As shown in Figure 23 and Figure 26:
Described guiding tube D-11 is positioned on the bottom cylindrical of described damper clutch release slave cylinder D-3, and cover has stuffing box gland D-19, and the cylindrical surface cover of described stuffing box gland D-19 has flow control valve D-20.
There is the damper bottom D-4 sealed the bottom of damper clutch release slave cylinder D-3, and damper bottom D-4 and base of damper D-6 is connected by one group of fastening screw trip bolt D-5.
As shown in Figure 23 and Figure 27:
Base of damper D-6 lower end and damper hinge head D-7 are connected, and the hinge base A-2 that damper hinge head D-7 is corresponding with on bedframe lower plate A-7 is articulated and connected;
Be furnished with gear shifting mechanism in described base of damper D-6, described gear shifting mechanism comprises damper and to transfer the files handle D-8, damper stick D-9, cone gear D-23, the positioning metal bead D-21 of bevel gear pair, location little spring D-22.
As shown in Figure 21 and Figure 24:
Two cone gear D-23 of bevel gear pair are fixedly connected with the front end of damper stick D-9 with the lower end of guiding tube D-11 respectively; Rear end and the damper of the damper stick D-9 handle D-8 that transfers the files is fixedly connected with.
The damper handle D-8 that transfers the files is connected in the side of base of damper D-6, the damper handle D-8 that transfers the files is provided with the ball recess D-25 of placement positioning prill D-21, pushed up by location little spring D-22 and press against, location little spring D-22 is arranged in the spring eye of base of damper D-6, and location little spring D-22 is in compressive state all the time.
As shown in figure 26:
Described stuffing box gland D-19, guiding tube guide sleeve D-20 and guiding tube D-11 are equipped with the rectangular opening of one group of corresponding control flow, namely the rectangular opening on described guiding tube guide sleeve D-20 is guide sleeve rectangular opening D-26, and the rectangular opening on guiding tube D-11 is guiding tube liquid current control rectangular opening D-24;
The pore size of described rectangular opening is different.The size of rectangular opening as shown in Figure 25.
As shown in figure 21 and figure:
When described damper D works, there are six gears adjustable; When gear is at I shelves, rectangular opening conducting minimum on guiding tube D-11, under making damper upper cylinder half D-16 and damper, cylinder D-17 conducting cross section is minimum, and now damping is maximum, all the other gears the like.
Multidimensional vibration-isolating platform of the present invention comprises the hydraulic system driving oil hydraulic cylinder A-4 work; Its structure is as shown in figure 28:
Described hydraulic system comprises oil hydraulic pump E-1, pressure regulator valve E-2, solenoid valve E-5, hydraulic coupling index gauge E-3, oil pipe E-4, hydraulic oil container E-6;
Described oil pipe E-4 connecting fluid press pump E-1, and be communicated with the oil pocket of oil hydraulic cylinder A-4 by solenoid valve E-5; The return line of this hydraulic system is connected with described hydraulic oil container E-6;
Described oil hydraulic pump E-1 is unidirectional volume adjustable hydraulic pump;
Described pressure regulator valve E-2 is the relief valve of pressure adjustable;
Described solenoid valve E-5 is the three position four-way directional control valve with bit function in H type;
Described hydraulic coupling index gauge E-3 is hydralic pressure gauge.
The working principle of this hydraulic system is as shown in figure 28:
During work, the pressure needed for vibration-isolating platform, under the instruction of hydraulic coupling index gauge E-3, regulates pressure regulator valve E-2, makes four oil hydraulic cylinder A-4 all have pressure that is identical, that determine.
The pressure of oil hydraulic cylinder A-4 coordinates with on base three pneumatic spring C, whole vibration-isolating platform can be made to have accurate zero stiffness characteristic, can improve the anti-vibration performance of platform like this, expands the vibration isolation frequency bandwidth of platform.
Multidimensional vibration-isolating platform of the present invention also comprises the pressure system of inflating to pneumatic spring C; Its structure is as shown in figure 16:
Described pressure system comprises air compressor F-1, air pressure index gauge F-2, tracheae F-3;
Air compressor F-1 is communicated with the air cavity of pneumatic spring C by described tracheae F-3;
Described air pressure index gauge F-2 is connected on described tracheae F-3.
During work, the height needed for vibration-isolating platform, under the instruction of air pressure index gauge F-2, inflate to pneumatic spring C, make platform have certain height, system has the pressure determined.
The elastic force of pneumatic spring C coordinates with on platform four oil hydraulic cylinder A-4, and whole vibration-isolating platform can be made to have accurate zero stiffness characteristic, to improve the anti-vibration performance of platform, expands the vibration isolation frequency bandwidth of platform.
Overall work principle of the present invention:
During whole working platform, first according to the weight of vibration isolation object, inflate to three pneumatic spring C, make platform tool height in need; Again according to extraneous vibration source excitation situation, regulate the rigidity (fourth gear is adjustable) of pneumatic spring C and the damping (six grades adjustable) of damper; If excited frequency is very low, can pressurize to hydraulic system, make platform rigidity trend towards zero stiffness, reach accurate zero stiffness.Like this, the vibration isolating effect that platform reaches best can be made.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technological scheme is carried out; or design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (9)
1. a multidimensional vibration-isolating platform, comprise bedframe (A), load carrying platform (B), described bedframe (A) comprises the bedframe upper plate (A-1) and bedframe lower plate (A-7) that be arranged in parallel, between described bedframe upper plate (A-1) and bedframe lower plate (A-7), be fixedly connected with by multiple bedframe supporting post (A-8);
It is characterized in that:
Described load carrying platform (B) comprises the load-carrying dish (B-1) parallel with bedframe upper plate (A-1), and described load-carrying dish (B-1) is located in the manhole (A-6) in the middle of bedframe upper plate (A-1); The profile of described load-carrying dish (B-1) is less than this manhole (A-6);
Described load carrying platform (B) is also provided with multiple pneumatic spring (C) and multiple damper (D); Described pneumatic spring (C) and the lower end of damper (D) are all articulated and connected by hinge and bedframe lower plate (A-7); Described pneumatic spring (C) is all connected with load-carrying dish (B-1) by spherical linkage with the upper end of damper (D);
Described pneumatic spring (C) and damper (D) on load-carrying dish (B-1) circumferentially shape alternately arrange;
Described load-carrying dish (B-1) is also respectively by hydraulic cylinder piston rod (A-3) hinge links of connecting rod (B-3) with multiple oil hydraulic cylinder (A-4); Hydraulic cylinder body (B-5) and the bedframe upper plate (A-1) of described oil hydraulic cylinder (A-4) are articulated and connected.
2. according to multidimensional vibration-isolating platform according to claim 1, it is characterized in that: described oil hydraulic cylinder (A-4) is uniformly distributed with the Central Symmetry of load-carrying dish (B-1).
3., according to multidimensional vibration-isolating platform according to claim 1, it is characterized in that:
Described oil hydraulic cylinder (A-4) also comprises oil hydraulic cylinder hydraulic fluid port
(B-4), oil hydraulic cylinder hydraulic fluid port
(B-6), hydraulic cylinder piston rod connecting head (B-11);
Described hydraulic cylinder piston rod connecting head (B-11) is provided with hydraulic cylinder piston rod connecting head pin-and-hole (B-10);
Described connecting rod (B-3) is respectively by link connector pin
(B-7), link connector pin
(B-9) be rotationally connected with connecting pin bores (B-8) on load-carrying dish and hydraulic cylinder piston rod connecting head pin-and-hole (B-10).
4., according to multidimensional vibration-isolating platform according to claim 1, it is characterized in that:
Described multidimensional vibration-isolating platform comprises the hydraulic system driving oil hydraulic cylinder (A-4) to work; Described hydraulic system comprises oil hydraulic pump (E-1), pressure regulator valve (E-2), solenoid valve (E-5), hydraulic coupling index gauge (E-3), oil pipe (E-4), solenoid valve (E-5), hydraulic oil container (E-6);
Described oil pipe (E-4) connecting fluid press pump (E-1), and be communicated with the oil pocket of oil hydraulic cylinder (A-4) by solenoid valve (E-5); The return line of this hydraulic system is connected with described hydraulic oil container (E-6);
Described oil hydraulic pump (E-1) is unidirectional volume adjustable hydraulic pump;
Described pressure regulator valve (E-2) is the relief valve of pressure adjustable;
Described solenoid valve (E-5) is the three position four-way directional control valve with bit function in H type;
Described hydraulic coupling index gauge (E-3) is hydralic pressure gauge.
5., according to multidimensional vibration-isolating platform according to claim 1, it is characterized in that:
Described multidimensional vibration-isolating platform comprises the pressure system of inflating to pneumatic spring (C); Described pressure system comprises air compressor (F-1), air pressure index gauge (F-2), tracheae (F-3);
The air cavity of air compressor (F-1) with pneumatic spring (C) is communicated with by described tracheae (F-3);
Described air pressure index gauge (F-2) is connected on described tracheae (F-3).
6. be applied to the pneumatic spring of the multidimensional vibration-isolating platform according to any one of claim 1 to 5, it is characterized in that:
Described pneumatic spring (C) comprises rubber pneumatic bag (C-4), air cylinder (C-6), stick (C-11), handle of transferring the files (C-12);
Described rubber pneumatic bag (C-4) is arranged in the top of pneumatic spring (C);
Upper end and the air spring upper cover (C-3) of described rubber pneumatic bag (C-4) are sealedly and fixedly connected; The lower end of rubber pneumatic bag (C-4) and the upper end of air cylinder (C-6) are sealedly and fixedly connected; Lower end and the pneumatic spring seat lower cover (C-7) of described air cylinder (C-6) are sealedly and fixedly connected, and pneumatic spring seat lower cover (C-7) is fixedly connected with spring seat base (C-8);
Three gas barriers (C-13) are had in the internal placement of described air cylinder (C-6); Three described gas barriers (C-13) are equally spaced from top to bottom in air cylinder (C-6);
The center of each gas barrier (C-13) is equipped with the gas barrier vent (C-27) of trough of belt, and its fluting presses the pivotal angle of gas barrier vent axis, is 180 ° of direction grooves (C-15), 120 ° of direction grooves (C-16) respectively; 60 ° of direction grooves (C-17);
Breathing pipe (C-14) is also provided with in described gas barrier vent (C-27); Described breathing pipe (C-14) is provided with the air vent tube openings (C-29) that circumferential arc length differs in the position crossed with three gas barriers (C-13), opening radian is respectively 180 °, 120 °, 60 ° from top to bottom.
7., according to pneumatic spring according to claim 6, it is characterized in that:
Be furnished with stick (C-11) in the side of described spring seat base (C-8), described stick (C-11) is fixedly connected with handle of transferring the files (C-12).
8., according to pneumatic spring according to claim 6, it is characterized in that:
The lower end of described breathing pipe (C-14) is fixedly connected with the vertical bevel gear of cylinder bevel gear pair (C-23) through bearing (C-22); The substantially horizontal bevel gear of described cylinder bevel gear pair (C-23) is fixedly connected with stick (C-11);
Described stick (C-11) is fixedly connected with handle of transferring the files (C-12).
9. according to pneumatic spring according to claim 6, it is characterized in that: described rubber pneumatic bag (C-4) is provided with a rubber pneumatic bag girdle ring (C-5).
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| CN201410044109.5A CN103791018B (en) | 2014-01-29 | 2014-01-29 | A kind of multidimensional vibration-isolating platform and pneumatic spring thereof |
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| CN201410044109.5A CN103791018B (en) | 2014-01-29 | 2014-01-29 | A kind of multidimensional vibration-isolating platform and pneumatic spring thereof |
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Denomination of invention: A Multidimensional Vibration Isolation Platform and Its Air Spring Effective date of registration: 20231225 Granted publication date: 20160217 Pledgee: Industrial and Commercial Bank of China Limited Weihai Wendeng sub branch Pledgor: WEIHAI RUNTONG RUBBER Co.,Ltd. Registration number: Y2023980073916 |
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